Alhambra

Medieval palace and fortress complex on a hill above Granada, Spain. See Granada.

At a glance

SourceAuthorRoleIn one line
Recreating an Ancient Pump (with no moving parts)Practical EngineeringsubjectA hilltop fortress that needed a pump with no moving parts.

Recreating an Ancient Pump (with no moving parts) — Practical Engineering (2026)

Source: Original · Readwise highlight

On the hill above Granada, Spain, sits the Alhambra: a medieval palace and fortress complex of the historic Islamic world.

  • Role: subject
  • In the article: The piece opens at the Alhambra, perched high above its rivers and so in need of inventive water supply. The Alcazaba, the stone fortress at its western tip, was fed by a pump without moving parts that a priest described in 1764 and a professor later recreated; the author sets out to build his own.
  • Why it matters: The site’s height above its water sources is the reason the whole experiment exists.